Influence of iron on phase stability and corrosion resistance of Ti-15%Cr alloy

Junaidi Syarif, Eko Kurniawan, Zainuddin Sajuri, Mohd. Zaidi Omar

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this study, the effect of Fe addition on the phase stability and corrosion resistance of Ti-15%Cr alloys was investigated. The alloying phenomenon in the specimens was also investigated to determine the effectiveness of the application of pure metallic powders as raw materials for the powder metallurgy method. Ti-15%Cr-1%Fe alloys exhibited needle-like structures within equiaxed structures, while Ti-15%Cr-5%Fe and Ti-15%Cr-10%Fe alloys only showed equiaxed grains. XRD results showed that the β phase could be stabilized by the addition of 5% or more Fe to the alloy. Although the pure powders were used as raw materials, the designated chemical composition, i.e. Ti-15%Cr-(1~10)%Fe can be achieved during sintering. The alloying phenomenon occurred upon sintering due to the high diffusivity of Cr and Fe within the β Ti matrix. The corrosion resistance of the newly developed Ti-15%Cr alloys was significantly improved compared with a commercial Ti-6%Al-4%V alloy.

Original languageEnglish
Pages (from-to)1775-1780
Number of pages6
JournalSains Malaysiana
Volume42
Issue number12
Publication statusPublished - Dec 2013

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Phase stability
Corrosion resistance
Iron
Alloying
Raw materials
Sintering
Powders
Powder metallurgy
Needles
Chemical analysis

Keywords

  • β phase
  • Alloying phenomenon
  • Corrosion resistance
  • Powder metallurgy
  • Sintering

ASJC Scopus subject areas

  • General

Cite this

Influence of iron on phase stability and corrosion resistance of Ti-15%Cr alloy. / Syarif, Junaidi; Kurniawan, Eko; Sajuri, Zainuddin; Omar, Mohd. Zaidi.

In: Sains Malaysiana, Vol. 42, No. 12, 12.2013, p. 1775-1780.

Research output: Contribution to journalArticle

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abstract = "In this study, the effect of Fe addition on the phase stability and corrosion resistance of Ti-15{\%}Cr alloys was investigated. The alloying phenomenon in the specimens was also investigated to determine the effectiveness of the application of pure metallic powders as raw materials for the powder metallurgy method. Ti-15{\%}Cr-1{\%}Fe alloys exhibited needle-like structures within equiaxed structures, while Ti-15{\%}Cr-5{\%}Fe and Ti-15{\%}Cr-10{\%}Fe alloys only showed equiaxed grains. XRD results showed that the β phase could be stabilized by the addition of 5{\%} or more Fe to the alloy. Although the pure powders were used as raw materials, the designated chemical composition, i.e. Ti-15{\%}Cr-(1~10){\%}Fe can be achieved during sintering. The alloying phenomenon occurred upon sintering due to the high diffusivity of Cr and Fe within the β Ti matrix. The corrosion resistance of the newly developed Ti-15{\%}Cr alloys was significantly improved compared with a commercial Ti-6{\%}Al-4{\%}V alloy.",
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AB - In this study, the effect of Fe addition on the phase stability and corrosion resistance of Ti-15%Cr alloys was investigated. The alloying phenomenon in the specimens was also investigated to determine the effectiveness of the application of pure metallic powders as raw materials for the powder metallurgy method. Ti-15%Cr-1%Fe alloys exhibited needle-like structures within equiaxed structures, while Ti-15%Cr-5%Fe and Ti-15%Cr-10%Fe alloys only showed equiaxed grains. XRD results showed that the β phase could be stabilized by the addition of 5% or more Fe to the alloy. Although the pure powders were used as raw materials, the designated chemical composition, i.e. Ti-15%Cr-(1~10)%Fe can be achieved during sintering. The alloying phenomenon occurred upon sintering due to the high diffusivity of Cr and Fe within the β Ti matrix. The corrosion resistance of the newly developed Ti-15%Cr alloys was significantly improved compared with a commercial Ti-6%Al-4%V alloy.

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